Is my motherboard the faulty thorn in my a-

PJBC

PJBC

New Member
Playing Metro 2033 and my PC switched itself off instantly, then booted up again, no noise, no sound, no smell - it proceeded to load up the BIOS splash screen and then the screen went to a luminescent black, then my HDTV said "No video available"

This happened before and it stumped me but I managed to fix it by using a VGA monitor to go into BIOS after resetting it, then proceeding to use a DVI-to-HDMI adaptor instead of straight HDMI - but THIS TIME, nothing seems to work and I'm really hoping I can pin the problem to my motherboard so I can do a bit of anger management 101 given the weeks of stress it's caused me

So after what I tried last time didn't work, I took out the video card and tried my old 9800GT which worked last time, then the RAM and checked for beeps, no beeps at all, disconnected the disk drive and HDD and still nothing, it just powers on then powers off after about 5 seconds then repeats until I manually turn it off with no screen recognition, regardless of whether I use the mobo HDMI or VGA (the VGA monitor stays in standby mode when connected, but as soon as I disconnect the VGA so it's on but no signal, it powers up with a colour test so the monitor itself is responsive and fine).


All help, knowledge, experience and advice appreciated

Pete




_______________
Z77-DS3H motherboard
XFX HD7850 (I currently possess 2 of them but use one)
OCZ 500W PSU
Intel Core i5-3450k CPU
2x Corsair Vengeance 4gb DDR3 RAM
Standard 7200RPM HDD, served me well the past year
 
spirit said:
It could be your power supply. Have you tried another one?
Click to expand...

The only one I have is a 500w one from a... not-trusted brand (not trusted but not untrusted) it was ok for my 9800GT but with my current set up I don't even want to risk using it for a second, I really don't wanna have to take it into a repair shop for them to test the hardware, or buy another PSU to test :/
 
you can still use that power supply to boot it up. just see if it does. dont do anything else with it , other than shut windows down after it boots. that wont be dangerous. you can also try to pull the card out and use the intel graphics, and see if it will boot. process of elimination, until you get stuck, or solved. good luck
 
kdfresh09 said:
you can still use that power supply to boot it up. just see if it does. dont do anything else with it , other than shut windows down after it boots. that wont be dangerous. you can also try to pull the card out and use the intel graphics, and see if it will boot. process of elimination, until you get stuck, or solved. good luck
Click to expand...

What about the no-RAM beeps? I got none at all
 
I see in your first post you say you have two 7870s? If that's the case, take one out and try the other one.

Try the card in a different motherboard perhaps just to see if the board is the problem. If you try the card in another board and t's fine, you know the problem is the board.
 
Hi, Is your processor Fan working? does your casing have enough ventilation? I think one of the reason your computer switch off instantly is because your processor might got too hot, Test your processor and motherboard if you have spare they are the most probable defective parts and also that is why you got no error beeps, another thing you might consider checking is your power supply there might be a short circuit inside or your power supply can no longer handle the load required by your system due to some defective component of the Power supply, try a known good power supply it might solve the problem. Good luck.
 
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